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Forces test
| Question | Answer |
|---|---|
| 1.What is energy? | The ability to do work or cause to change |
| 2. What is “renewable energy “? | comes from natural sources that replenish faster than they're used |
| 3.What are the four types of Friction? | static, sliding, rolling, and fluid friction. |
| 4.What is an unbalanced force ? | Forces facing to opposite direction |
| 5.Give an example of a balanced force | a book resting on a table |
| 6.What is gravity? | invisible force of attraction that pulls any two objects with mass or energy toward each other |